Horseshoe-machine



UNITE STA `ES AEN OFFICE.

IVM. IV. LEWIS, OF CINCINNATI, OHIO.

HORSESHOE-IYIACHINE.

Specification forming; part of Letters Patent No. 22,812, dated Februaryl, 1859; Reissued March To all whom it 'may concern:

Be it known that I, IVILLmM IV. Lewis, of Cincinnati, in the county ofHamilton and State of Ohio,l have invented certain new and usefulImprovements in Machinery for Making Horseshoe-Iron; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being hadl to the accompanying drawings, forming apart of this specification, in which- Figures l, Gand 7 Vare front viewsshowing the rollers at different stages of the operation. Figs.r 2 andS, are transverse and longitudinal sections of the same. Fig. 3, is aface view of a piece of iron rolled to the form to be bent into a horseshoe. Fig. 4, isan edge View of the same. Fig. 5, is a transversesection of the same.

Similar letters of reference in each of the several figures indicatecorresponding parts.

Before stating my invention, I deem it proper to remark that I am awarethat horse and ox shoe iron has'been produced by machinery, and thatsaid machinery in some cases consists simply of two rollers mounted ordressedl With grooves and ribs and in other cases of four rollersproperly dressed for giving a certain configuration to the iron fromwhich the shoesare to be formed, but as in none of the machines beforeused, pro` vision for reducing the iron so as to have the horse shoeiron concave on its underside, and thin on its inner edge and thick onits -outer edge on account of its production not having beenaccomplished by means of the combination of lateral pressure withlongitudinal pressure in the rolls employed the successful manufactureof such iron has not before my invention, been attained.

The nature of my invention consists in the combination in a pair ofrolls of a groove and creasers which tvill, by their joint operationexert pressure 1n a lateral as well as a longitudinal direction and thusproduce by a continuous operation horse shoe iron which is concave o-nits upper side, thin on its inner edge, thick on its outer edge, creasedon its under side and gradually diminished in Width from heel to toe, ashereinafter specified.

My invention consists in dividing the rollers radially and vertically sothat the devices Which give the desired configuration tothe horse shoeiron may be made separate from the rollers and facilitiesshall beafforded for renewing the same whenever they become Worn or imperfect intheir operation or Whenever it is desired to insert devices forconfiguring the iron, of a size and character adapted forproducing horseshoe iron for making large or small shoes.

In Vthe example of my invention represented in the drawing, the rollersare specially adapted to feeding the bar at intervals to the bending"machinery patented by Ine J une 28, 1858, shaping it as they do so, andthus dispensing With the vertically-moving dies in my patented machineabove mentioned. The lower roller B, `is perfectly cylindrical exceptthat itl hastwo separate curved projections a, a, which are struck fromthe same center; these projections I call the creasers, they servingtoproduce the creases see g, g, Fig. 3) in the horse shoe iron. Thecircumference of the roller B, is equal to double the length which thepiece of bar which forms the shoe has after it has been rolled, and thecreases a, a, consequently extend nearly half Way around it. The upperroller A, is cylindrical externally `and contains a groove b, extendingall around.` This groove is made to gradually widen on a curve line fromm, to m', and to decrease in Width from a2, to m2, on the same curve, asshown in the' drawing, so that the shoe shall be broad at the toe andgradually decrease in Width toward the heels of the shoe'. The bottom ofthe groove on one half of the circumference of the roller' is madeeccentric, as shown at b', ZJ, in Fig. l, to roll the piece ratherthinner in the middle and gradually thicken toward the ends, and thesaid eccentric portions have a conical projection along one side, asshown at o, c, Figs. l, 2, 6 and 7, to produce a bevel along the inneredge'of the piece on the opposite side to that on which the creases areformed, such bevel forming the concave of the shoe. The length of theabove described half of the circumference of the bottom of the groovemust be equal to the semicircumference of the roller B. The depth andWidth of the several portions of thishalf of the groove are such as tomake the shoe of the requisite thickness. The other half of thecircumference of the bottom of the groovel is concentric and deeper asshown at 71., 7L, in Fig. l, and Wide enough to receive the bar fromwhich the shoes are to be made Without gripping it against the roller B.

In the pair of rolls represented, it Will be readily understood thatonly one half of the circumference is operative, the bar not beinggripped by the half I), Z), of the groove and consequently not being fedforward. This suspension of the operation is for the purpose of allowingthe operation of the bending apparat-us (which is not shown) to takeplace. The bending of one piece is performed While the deep part h, 71,of the groove is passing the bar. The pieces after having been formed asshown in Figs. 3, I and 5, may be cut off by a cutter attached to one ofthe rollers or otherwise suitably applied.

I Will remark that the operative portions of the rollers may occupy lessthan one half. of the circumference, but they must of course occupycorresponding portions of both rollers.

Then the rollers are to be used for rolling the bars into a series oflengths, like the pieces shown in Figs. 3, 4; and 5, the other halves ofthe rolls are to be formed like the operative portions of the rollersdescribed, or the rollers may have circumferences composed of acontinuous series of such operative portions in any number; and a barafter leaving a pair of ordinary rollers may be run, Without reheatingthrough a pair of such rollers and be subsequently cut in pieces andformed into shoes by bending in any manner.

The creasers a, as, may have attached the punches for punching the nailholes, or the said holes may be punched by a subsequentoperation.

Operation: The bar of metal being introduced to the rolls which We Willsuppose are adapted for making merchant horse shoe iron to be bent inany Way desired it is operated upon gradually by the conical projectionsof the grooves and the curved projections or creasers, and as saidprojection gradually increases and decreases in Width on a curve themetal is pressed with a concave on the side which is to form the upperside of the shoe of gradually increasing Width from the heels to the toeof the shoe, at the same time that the metal is thus being pressed thecreasers form the creases g, in it on the side which is to form thebottom of the shoe; owing to the concave being formed on the metal andno vertical room being allowed between the rollers for the displacedmetal which occupy the place of the concave, a lateral displacement ofthe metal takes place and the displaced metal fills that portion of thegroove b, which has a concentric circumference and that portion whichgradually increases in width from' m to a and decreases from 0c to 0:2,and forms the Widest part of the shoe, and said metal owing to thecreasers being on a curved line corresponding to the curved line w, rc2,is pressed compactly and perfectly against the curved collar of thegroove by the same pressure which is employed to form the crease in themetal and thus the operation continues until a series of impressions onthe metal suitable for forming a series of perfect shoes bythe simpleoperation of cutting olf and bending the parts impressed, are produced.A

IVhat I claim as my invention and desire to secure by Letters Patent,is-

l. The combination in a pair of rolls of a groove b, and creasers a,which will, by their joint operation exert pressure in a lateral as Wellas a longitudinal direction, substantially as and for the purposes setforth.

2. In combination with the above, I claim dividing the rollers radiallyand vertically substantially as and for the purposes set forth.

IV. IV. LEVIS. I/Vitnesses J. I-I. GETZANDANNER, Jos. HARRISON.

[Fnzs'r PRINTED 1911.]

